i called a couple shops around my area and they want ruffly $650 for a true dual exhaust with H or X pipe and any muffler i want. and keeping the stock transmission cross member, if i want the catalytic converters they want even more! (i don't really need them tho state doesn't do emissions on cars older then 96) one of the shops said they would even change the stock manifold studs. or should i just buy a dual exhaust kit off line(no H or X pipe), dual hump cross member, and down pipes to use the stock manifolds and install everything my self. estamated cost would be 550ish.